China's central government reaffirmed its long-term and unswerving adherence to the principle of "one country, two systems" in Hong Kong, while calling on people in Hong Kong to oppose violence and defend the rule of law. The central government has been closely following the development of the situation in Hong Kong, according to Yang Guang, a spokesperson for the Hong Kong and Macao Affairs Office of the State Council. Yang made the remarks regarding the ongoing protests in the Hong Kong Special Administrative Region at a press conference held in Beijing on Monday.